sys_devillepi2 {StratifiedSampling} | R Documentation |
Second order inclusion probabilities of Deville's systematic
Description
This function returns the second order inclusion probabilities of Deville's systematic.
Usage
sys_devillepi2(pik)
Arguments
pik |
A vector of inclusion probabilities |
Value
A matrix of second order inclusion probabilities.
References
Deville, J.-C. (1998), Une nouvelle méthode de tirage à probabilité inégales. Technical Report 9804, Ensai, France.
Chauvet, G. (2012), On a characterization of ordered pivotal sampling, Bernoulli, 18(4):1320-1340
Examples
set.seed(1)
N <- 30
n <- 4
pik <- as.vector(inclprob(runif(N),n))
PI <- sys_devillepi2(pik)
#image(as(as.matrix(PI),"sparseMatrix"))
pik <- c(0.2,0.5,0.3,0.4,0.9,0.8,0.5,0.4)
PI <- sys_devillepi2(pik)
#image(as(as.matrix(PI),"sparseMatrix"))
[Package StratifiedSampling version 0.4.2 Index]